Electrochemistry Application — Boron-doped cobalt-iron bimetal phosphides nanosheets for enhanced oxygen evolution

Measurement evidence

Electrochemistry Application

Boron-doped cobalt-iron bimetal phosphides nanosheets for enhanced oxygen evolution · Liu X., He G., Liu H. et al. · Journal of Alloys and Compounds · 2022 · 162208

13 measurement groups · 50 results

Reported values remain attached to the sample, method, conditions, extraction quality and source location that produced them.

OER durability: post-CV LSV and chronoamperometry

Voltammetry Chronoamperometry

Co1Fe1-B-P · Nanosheet

3000 CV cycles from 1.2 to 1.5 V vs RHE at 100 mV s-1; 20 h chronoamperometry at potential corresponding to 10 mA cm-2.

Atmosphere: 1.0 M KOH electrolyte
Geometry: rotating glassy carbon disk electrode
Context: target catalyst
Measurement source: 6 · Results and discussion · Fig. 4e-f

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
chronoamperometry durability duration	20 h with negligible current decay	—	—	Text Exact Reported	6 · Results and discussion · Fig. 4f
CV cycling durability	3000 cycles with no obvious potential shift	—	—	Text Exact Reported	6 · Results and discussion · Fig. 4e

RDE OER electrochemistry: LSV, Tafel, CV Cdl, EIS

Impedance spectroscopy Voltammetry Tafel and polarisation analysis

Co1Fe1-B · Nanosheet

1.0 M KOH; room temperature; rotating glassy carbon disk electrode at 1600 rpm; catalyst loading 0.50 mg cm-2; iR compensated.

Temperature: room temperature
Atmosphere: 1.0 M KOH electrolyte
Geometry: 5 mm glassy carbon rotating disk electrode, 0.50 mg cm-2 catalyst loading
Context: MOF-derived catalyst/control
Measurement source: 2 · 2.7. Electrochemical measurements

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
double-layer capacitance Cdl	7.16	—	—	SI Table Exact Reported	16 · Supporting Information · Table S2
overpotential at 10 mA cm-2	328	—	—	SI Table Exact Reported	16 · Supporting Information · Table S2
charge-transfer resistance Rct	227.04	—	—	SI Table Exact Reported	16 · Supporting Information · Table S2
Tafel slope	55.83	—	—	SI Table Exact Reported	16 · Supporting Information · Table S2

RDE OER electrochemistry: LSV, Tafel, CV Cdl, EIS

Impedance spectroscopy Voltammetry Tafel and polarisation analysis

Co1Fe1-B-P · Nanosheet

1.0 M KOH; room temperature; rotating glassy carbon disk electrode at 1600 rpm; catalyst loading 0.50 mg cm-2; iR compensated.

Temperature: room temperature
Atmosphere: 1.0 M KOH electrolyte
Geometry: 5 mm glassy carbon rotating disk electrode, 0.50 mg cm-2 catalyst loading
Context: MOF-derived catalyst/control
Measurement source: 2 · 2.7. Electrochemical measurements

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
double-layer capacitance Cdl	64.48	—	—	SI Table Exact Reported	16 · Supporting Information · Table S2
overpotential at 10 mA cm-2Marked as a best value within this paper	294	—	—	SI Table Exact Reported	16 · Supporting Information · Table S2
charge-transfer resistance Rct	38.02	—	—	SI Table Exact Reported	16 · Supporting Information · Table S2
Tafel slope	49.52	—	—	SI Table Exact Reported	16 · Supporting Information · Table S2

RDE OER electrochemistry: LSV, Tafel, CV Cdl, EIS

Impedance spectroscopy Voltammetry Tafel and polarisation analysis

Co1Fe1-P · Powder

1.0 M KOH; room temperature; rotating glassy carbon disk electrode at 1600 rpm; catalyst loading 0.50 mg cm-2; iR compensated.

Temperature: room temperature
Atmosphere: 1.0 M KOH electrolyte
Geometry: 5 mm glassy carbon rotating disk electrode, 0.50 mg cm-2 catalyst loading
Context: MOF-derived catalyst/control
Measurement source: 2 · 2.7. Electrochemical measurements

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
double-layer capacitance Cdl	20.29	—	—	SI Table Exact Reported	16 · Supporting Information · Table S2
overpotential at 10 mA cm-2	310	—	—	SI Table Exact Reported	16 · Supporting Information · Table S2
charge-transfer resistance Rct	55.42	—	—	SI Table Exact Reported	16 · Supporting Information · Table S2
Tafel slope	53.94	—	—	SI Table Exact Reported	16 · Supporting Information · Table S2

RDE OER electrochemistry: LSV, Tafel, CV Cdl, EIS

Impedance spectroscopy Voltammetry Tafel and polarisation analysis

Co1Fe2-B · Unknown

1.0 M KOH; room temperature; rotating glassy carbon disk electrode at 1600 rpm; catalyst loading 0.50 mg cm-2; iR compensated.

Temperature: room temperature
Atmosphere: 1.0 M KOH electrolyte
Geometry: 5 mm glassy carbon rotating disk electrode, 0.50 mg cm-2 catalyst loading
Context: MOF-derived catalyst/control
Measurement source: 2 · 2.7. Electrochemical measurements

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
double-layer capacitance Cdl	3.77	—	—	SI Table Exact Reported	16 · Supporting Information · Table S2
overpotential at 10 mA cm-2	345	—	—	SI Table Exact Reported	16 · Supporting Information · Table S2
charge-transfer resistance Rct	379.13	—	—	SI Table Exact Reported	16 · Supporting Information · Table S2
Tafel slope	43.88	—	—	SI Table Exact Reported	16 · Supporting Information · Table S2

RDE OER electrochemistry: LSV, Tafel, CV Cdl, EIS

Impedance spectroscopy Voltammetry Tafel and polarisation analysis

Co1Fe2-B-P · Unknown

1.0 M KOH; room temperature; rotating glassy carbon disk electrode at 1600 rpm; catalyst loading 0.50 mg cm-2; iR compensated.

Temperature: room temperature
Atmosphere: 1.0 M KOH electrolyte
Geometry: 5 mm glassy carbon rotating disk electrode, 0.50 mg cm-2 catalyst loading
Context: MOF-derived catalyst/control
Measurement source: 2 · 2.7. Electrochemical measurements

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
double-layer capacitance Cdl	8.8	—	—	SI Table Exact Reported	16 · Supporting Information · Table S2
overpotential at 10 mA cm-2	306	—	—	SI Table Exact Reported	16 · Supporting Information · Table S2
charge-transfer resistance Rct	65.04	—	—	SI Table Exact Reported	16 · Supporting Information · Table S2
Tafel slope	43.67	—	—	SI Table Exact Reported	16 · Supporting Information · Table S2

RDE OER electrochemistry: LSV, Tafel, CV Cdl, EIS

Impedance spectroscopy Voltammetry Tafel and polarisation analysis

Co1Fe2-P · Powder

1.0 M KOH; room temperature; rotating glassy carbon disk electrode at 1600 rpm; catalyst loading 0.50 mg cm-2; iR compensated.

Temperature: room temperature
Atmosphere: 1.0 M KOH electrolyte
Geometry: 5 mm glassy carbon rotating disk electrode, 0.50 mg cm-2 catalyst loading
Context: MOF-derived catalyst/control
Measurement source: 2 · 2.7. Electrochemical measurements

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
double-layer capacitance Cdl	8.48	—	—	SI Table Exact Reported	16 · Supporting Information · Table S2
overpotential at 10 mA cm-2	298	—	—	SI Table Exact Reported	16 · Supporting Information · Table S2
charge-transfer resistance Rct	46.28	—	—	SI Table Exact Reported	16 · Supporting Information · Table S2
Tafel slopeMarked as a best value within this paper	39.16	—	—	SI Table Exact Reported	16 · Supporting Information · Table S2

RDE OER electrochemistry: LSV, Tafel, CV Cdl, EIS

Impedance spectroscopy Voltammetry Tafel and polarisation analysis

Co2Fe1-B · Nanosheet

1.0 M KOH; room temperature; rotating glassy carbon disk electrode at 1600 rpm; catalyst loading 0.50 mg cm-2; iR compensated.

Temperature: room temperature
Atmosphere: 1.0 M KOH electrolyte
Geometry: 5 mm glassy carbon rotating disk electrode, 0.50 mg cm-2 catalyst loading
Context: MOF-derived catalyst/control
Measurement source: 2 · 2.7. Electrochemical measurements

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
double-layer capacitance CdlMarked as a best value within this paper	107.48	—	—	SI Table Exact Reported	16 · Supporting Information · Table S2
overpotential at 10 mA cm-2	296	—	—	SI Table Exact Reported	16 · Supporting Information · Table S2
charge-transfer resistance RctMarked as a best value within this paper	30.61	—	—	SI Table Exact Reported	16 · Supporting Information · Table S2
Tafel slope	78.94	—	—	SI Table Exact Reported	16 · Supporting Information · Table S2

RDE OER electrochemistry: LSV, Tafel, CV Cdl, EIS

Impedance spectroscopy Voltammetry Tafel and polarisation analysis

Co2Fe1-B-P · Nanosheet

1.0 M KOH; room temperature; rotating glassy carbon disk electrode at 1600 rpm; catalyst loading 0.50 mg cm-2; iR compensated.

Temperature: room temperature
Atmosphere: 1.0 M KOH electrolyte
Geometry: 5 mm glassy carbon rotating disk electrode, 0.50 mg cm-2 catalyst loading
Context: MOF-derived catalyst/control
Measurement source: 2 · 2.7. Electrochemical measurements

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
double-layer capacitance Cdl	14.11	—	—	SI Table Exact Reported	16 · Supporting Information · Table S2
overpotential at 10 mA cm-2	309	—	—	SI Table Exact Reported	16 · Supporting Information · Table S2
charge-transfer resistance Rct	102.05	—	—	SI Table Exact Reported	16 · Supporting Information · Table S2
Tafel slope	43.67	—	—	SI Table Exact Reported	16 · Supporting Information · Table S2

RDE OER electrochemistry: LSV, Tafel, CV Cdl, EIS

Impedance spectroscopy Voltammetry Tafel and polarisation analysis

Co2Fe1-P · Powder

1.0 M KOH; room temperature; rotating glassy carbon disk electrode at 1600 rpm; catalyst loading 0.50 mg cm-2; iR compensated.

Temperature: room temperature
Atmosphere: 1.0 M KOH electrolyte
Geometry: 5 mm glassy carbon rotating disk electrode, 0.50 mg cm-2 catalyst loading
Context: MOF-derived catalyst/control
Measurement source: 2 · 2.7. Electrochemical measurements

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
double-layer capacitance Cdl	24.82	—	—	SI Table Exact Reported	16 · Supporting Information · Table S2
overpotential at 10 mA cm-2	301	—	—	SI Table Exact Reported	16 · Supporting Information · Table S2
charge-transfer resistance Rct	46.0	—	—	SI Table Exact Reported	16 · Supporting Information · Table S2
Tafel slope	42.79	—	—	SI Table Exact Reported	16 · Supporting Information · Table S2

RDE OER electrochemistry: LSV, Tafel, CV Cdl, EIS

Impedance spectroscopy Voltammetry Tafel and polarisation analysis

Co-B · Unknown

1.0 M KOH; room temperature; rotating glassy carbon disk electrode at 1600 rpm; catalyst loading 0.50 mg cm-2; iR compensated.

Temperature: room temperature
Atmosphere: 1.0 M KOH electrolyte
Geometry: 5 mm glassy carbon rotating disk electrode, 0.50 mg cm-2 catalyst loading
Context: MOF-derived catalyst/control
Measurement source: 2 · 2.7. Electrochemical measurements

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
double-layer capacitance Cdl	63.35	—	—	SI Table Exact Reported	16 · Supporting Information · Table S2
overpotential at 10 mA cm-2	313	—	—	SI Table Exact Reported	16 · Supporting Information · Table S2
charge-transfer resistance Rct	82.21	—	—	SI Table Exact Reported	16 · Supporting Information · Table S2
Tafel slope	75.67	—	—	SI Table Exact Reported	16 · Supporting Information · Table S2

RDE OER electrochemistry: LSV, Tafel, CV Cdl, EIS

Impedance spectroscopy Voltammetry Tafel and polarisation analysis

Co-B-P · Powder

1.0 M KOH; room temperature; rotating glassy carbon disk electrode at 1600 rpm; catalyst loading 0.50 mg cm-2; iR compensated.

Temperature: room temperature
Atmosphere: 1.0 M KOH electrolyte
Geometry: 5 mm glassy carbon rotating disk electrode, 0.50 mg cm-2 catalyst loading
Context: MOF-derived catalyst/control
Measurement source: 2 · 2.7. Electrochemical measurements

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
double-layer capacitance Cdl	39.68	—	—	SI Table Exact Reported	16 · Supporting Information · Table S2
overpotential at 10 mA cm-2	345	—	—	SI Table Exact Reported	16 · Supporting Information · Table S2
charge-transfer resistance Rct	654.27	—	—	SI Table Exact Reported	16 · Supporting Information · Table S2
Tafel slope	55.82	—	—	SI Table Exact Reported	16 · Supporting Information · Table S2

RDE OER electrochemistry: LSV, Tafel, CV Cdl, EIS

Impedance spectroscopy Voltammetry Tafel and polarisation analysis

Co-P · Powder

1.0 M KOH; room temperature; rotating glassy carbon disk electrode at 1600 rpm; catalyst loading 0.50 mg cm-2; iR compensated.

Temperature: room temperature
Atmosphere: 1.0 M KOH electrolyte
Geometry: 5 mm glassy carbon rotating disk electrode, 0.50 mg cm-2 catalyst loading
Context: MOF-derived catalyst/control
Measurement source: 2 · 2.7. Electrochemical measurements

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
double-layer capacitance Cdl	44.73	—	—	SI Table Exact Reported	16 · Supporting Information · Table S2
overpotential at 10 mA cm-2	330	—	—	SI Table Exact Reported	16 · Supporting Information · Table S2
charge-transfer resistance Rct	219.61	—	—	SI Table Exact Reported	16 · Supporting Information · Table S2
Tafel slope	72.48	—	—	SI Table Exact Reported	16 · Supporting Information · Table S2